To prepare salad, combine the first 4 ingredients in a bowl.
To prepare dressing, combine juice and remaining ingredients in a small bowl, stirring with a whisk. Drizzle dressing over watercress mixture; toss gently to coat.
MyRecipes is working with Let's Move!, the Partnership for a Healthier America, and USDA's MyPlate to give anyone looking for healthier options access to a trove of recipes that will help them create healthy, tasty plates. For more information about creating a healthy plate, visit www.choosemyplate.gov.